A multi-wheel adjusted tensioning mechanism

Abstract

The utility model discloses a kind of tensioning mechanisms of multi-wheel adjustment, it is related to chain tensioning technical field.The utility model includes first displacement wheel and second displacement wheel, first displacement wheel is displaced in X1 direction or X2 direction, the center of circle of first displacement wheel and second displacement wheel is equipped with middle shaft, and is connected with short-range adjusting part by middle shaft, short-range adjusting part and the straight line connected with X1X2 direction present certain angle β, 0°≤β≤180°.The utility model is set by first displacement wheel, second displacement wheel, short-range adjusting part, sleeve and push rod etc., long short-range tensioning adjustment distance is combined, every loose tensioning of most suitable chain is not missed, chain is not only loose but also not tight, in addition, the design that connecting block and driving block have gap can directly sleeve chain in the side of first displacement wheel, it is convenient to install and maintain chain.

Description

Technical Field

[0001] This utility model relates to the field of chain tensioning technology, specifically to a multi-wheel adjustable tensioning mechanism. Background Technology

[0002] The tensioning mechanism is the core retaining device of belt and chain drive systems. It automatically adjusts the tension through elastic or hydraulic structures to compensate for chain slack caused by wear or temperature changes.

[0003] Existing chain tensioning mechanisms typically use only one movable wheel for tensioning, resulting in a tension level that is either 1 or 2, lacking a more precise adjustment range. This leads to the chain being too tight, making it prone to breakage, or too loose, reducing chain transmission efficiency. Furthermore, the method of having the chain pass between the movable and fixed wheels in a non-circular fashion increases the time required for installation and maintenance. Therefore, a multi-wheel adjustable tensioning mechanism is proposed to address these issues. Utility Model Content

[0004] The purpose of this invention is to address the problems of existing chain tensioning mechanisms, which typically rely on only one movable wheel for tensioning, resulting in insufficient tension precision, excessive chain tension leading to chain breakage, or excessive chain slack reducing chain transmission efficiency. Furthermore, the method of having the chain pass between the movable and immovable wheels in a non-circular fashion increases the time required for installation and maintenance. This invention provides a multi-wheel adjustable tensioning mechanism.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A multi-wheel adjustable tensioning mechanism includes a first displacement wheel and a second displacement wheel. The first displacement wheel moves in either the X1 or X2 direction. A central shaft is mounted at the center of both the first and second displacement wheels, and each is connected to a short-range adjustment member via the central shaft. The short-range adjustment member forms an angle β with the straight line connecting the X1 and X2 directions, where 0° < β < 180°. The short-range adjustment member moves the second displacement wheel away from or closer to the first displacement wheel. A first stationary wheel is also included. The shortest line connecting the first stationary wheel and the first displacement wheel (line 1), the shortest line connecting the first stationary wheel and the second displacement wheel (line 2), and the shortest line connecting the first displacement wheel and the second displacement wheel (line 3) are not on the same straight line. A driving block is also included. The driving block is connected to the first displacement wheel via the central shaft. A connecting block is connected to the side of the driving block that is away from and / or closer to the first displacement wheel. The driving block and the connecting block form an L-shape or a U-shape with a notch. The first displacement wheel is positioned at this notch.

[0007] Furthermore, the short-range adjustment component includes a first plate, a second plate, a closing plate, and a receiving plate. The side of the first plate closest to the second plate is connected to the closing plate, and the side of the second plate closest to the first plate is connected to the receiving plate. The shapes of the first plate connecting to the closing plate and the second plate connecting to the receiving plate are both L-shaped.

[0008] Furthermore, a slot is formed on the surface of the second plywood, and an insert plate is connected to the side of the closing plate near the second plywood, the insert plate being inserted into the slot.

[0009] Furthermore, at least one protrusion is installed on the insert plate, and several grooves are formed on the inner wall of the empty slot, with at least one protrusion inserted into one of the grooves.

[0010] Furthermore, a rotary groove is formed on the side surface of the receiving plate near the closing plate, and a gear is provided in the rotary groove. A plurality of meshing grooves are formed on the side surface of the closing plate near the receiving plate, and the gear meshes with the plurality of meshing grooves.

[0011] Furthermore, a push rod is connected to the side of the connecting block away from the first displacement wheel. A sleeve is provided on the outer sleeve of the push rod, and a spring is provided inside the sleeve and the spring is sleeved on the push rod. A connecting piece is connected to the end of the push rod away from the connecting block, and the spring abuts against the connecting piece.

[0012] Furthermore, a back plate is provided on one side of the first displacement wheel, and a sliding groove is provided through the back plate. The first displacement wheel is connected to a sliding block through a central shaft, and the sliding block slides in the sliding groove in the X1 or X2 direction.

[0013] Furthermore, a connecting rod is connected to the end of the sleeve away from the connecting block, and the connecting rod is inserted into the connector of the back plate and fixed to the back plate.

[0014] Furthermore, it also includes a second stationary wheel and a third stationary wheel, the second stationary wheel, the third stationary wheel and the first stationary wheel being connected to a limiting plate via a central shaft on the side away from the back plate.

[0015] Furthermore, a mounting plate is provided on the side of the back plate away from the first displacement wheel, and the mounting plate is at least indirectly connected to the sliding block.

[0016] The beneficial effects of this utility model are as follows: By setting a first displacement wheel, a second displacement wheel, a short-stroke adjustment component, a sleeve, and a push rod, this utility model combines the long and short stroke tension adjustment distances to ensure that every loose part of the chain is properly tensioned without any omissions, so that the chain tension is neither too loose nor too tight. In addition, the design of leaving notches in the connecting block and the driving block allows the chain to be directly fitted onto one side of the first displacement wheel, which is convenient for installing and maintaining the chain. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of this utility model;

[0018] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0019] Figure 3 This is a top view of the structure of this utility model;

[0020] Figure 4 This is a utility model Figure 1 Schematic diagram of the structure of the short-to-medium range regulating component;

[0021] Figure 5 This is a utility model Figure 4 A cross-sectional structural diagram.

[0022] Reference numerals: 1. First displacement wheel; 2. Second displacement wheel; 3. First stationary wheel; 4. Second stationary wheel; 5. Third stationary wheel; 6. Short-range adjustment component; 61. First mating plate; 62. Second mating plate; 63. Closing plate; 64. Receiving plate; 65. Engaging groove; 66. Rotary wheel groove; 67. Gear; 68. Insert plate; 681. Protrusion; 69. Hollow groove; 691. Groove; 7. Driving block; 8. Connecting block; 9. Push rod; 10. Sleeve; 11. Connecting rod; 12. Back plate; 13. Sliding groove; 14. Mounting plate; 15. Limiting plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] A multi-wheel adjustable tensioning mechanism includes a first displacement wheel 1 and a second displacement wheel 2. The first displacement wheel 1 is displaced in the X1 or X2 direction. A central shaft is installed at the center of both the first displacement wheel 1 and the second displacement wheel 2, and both are connected to a short-range adjustment member 6 through the central shaft. The short-range adjustment member 6 forms a certain angle β with the straight line connecting the X1 and X2 directions, where 0° < β < 180°. The short-range adjustment member 6 moves the second displacement wheel 2 away from or closer to the first displacement wheel 1. A first stationary wheel 3 is not on the same straight line as the shortest line connecting the first stationary wheel 3 and the first displacement wheel 1, the second shortest line connecting the first stationary wheel 3 and the second displacement wheel 2, or the third shortest line connecting the first displacement wheel 1 and the second displacement wheel 2. A driving block 7 is connected to the first displacement wheel 1 through the central shaft. A connecting block 8 is connected to the side of the driving block 7 away from and / or closer to the first displacement wheel 1. The driving block 7 and the connecting block 8 form an L-shape or a U-shape with a notch. The first displacement wheel 1 is positioned at this notch.

[0028] like Figure 4 As shown, the short-range adjustment component 6 includes a first mating plate 61, a second mating plate 62, a closing plate 63, and a receiving plate 64. The side of the first mating plate 61 closest to the second mating plate 62 is connected to the closing plate 63, and the side of the second mating plate 62 closest to the first mating plate 61 is connected to the receiving plate 64. The shapes of the first mating plate 61 connecting to the closing plate 63 and the second mating plate 62 connecting to the receiving plate 64 are both L-shaped.

[0029] like Figure 5As shown, a slot 69 is provided on the surface of the second composite plate 62, and an insert plate 68 is connected to the side of the closing plate 63 near the second composite plate 62. The insert plate 68 is inserted into the slot 69.

[0030] like Figure 5 As shown, at least one protrusion 681 is installed on the insert plate 68, and several grooves 691 are provided on the inner wall of the slot 69, with at least one protrusion 681 inserted into one of the grooves 691.

[0031] like Figure 5 As shown, a rotary groove 66 is provided on the side surface of the receiving plate 64 near the closing plate 63, and a gear 67 is provided in the rotary groove 66. A plurality of meshing grooves 65 are provided on the side surface of the closing plate 63 near the receiving plate 64, and the gear 67 meshes with the plurality of meshing grooves 65.

[0032] like Figure 3 As shown, a push rod 9 is connected to the side of the connecting block 8 away from the first displacement wheel 1. A sleeve 10 is provided on the outer sleeve of the push rod 9. A spring is provided inside the sleeve 10 and the spring is sleeved on the push rod 9. A connecting piece is connected to the end of the push rod 9 away from the connecting block 8, and the spring abuts against the connecting piece.

[0033] like Figure 1 As shown, a back plate 12 is provided on one side of the first displacement wheel 1, and a sliding groove 13 is provided through the back plate 12. The first displacement wheel 1 is connected to a sliding block through the central shaft, and the sliding block slides in the sliding groove 13 in the X1 or X2 direction.

[0034] like Figure 1 As shown, a connecting rod 11 is connected to the end of the sleeve 10 away from the connecting block 8. The connecting rod 11 is inserted into the connecting piece of the back plate 12 and fixed to the back plate 12.

[0035] like Figure 3 As shown, it also includes a second stationary wheel 4 and a third stationary wheel 5. The second stationary wheel 4, the third stationary wheel 5 and the first stationary wheel 3 are connected to a limiting plate 15 via a central shaft on the side away from the back plate 12. The limiting plate 15 restricts the first stationary wheel 3, the second stationary wheel 4 and the third stationary wheel 5 from falling out, and the limiting plate 15 can be formed in different shapes and lengths according to the positions of the three wheels.

[0036] like Figure 2 As shown, a mounting plate 14 is provided on the side of the back plate 12 away from the first displacement wheel 1, and the mounting plate 14 is at least indirectly connected to the sliding block.

[0037] Example 1: The first displacement wheel 1, the second displacement wheel 2, the first stationary wheel 3, the second stationary wheel 4, and the third stationary wheel 5 are all engaged with the chain. When the chain loosens after running for a period of time, the spring inside the sleeve 10 abuts against the connecting piece connected to the push rod 9 with outward tension, causing the push rod 9 to move the connecting block 8, the driving block 7, and the first displacement wheel 1 in a sliding position in the sliding groove 13, and translate in the X2 direction. At this time, the long-stroke part of the chain is tensioned. The short-stroke part has a short-stroke adjustment piece 6, which requires manually pulling the closing plate 63 towards the first displacement wheel 1. The meshing groove 65 drives the gear 67 to rotate. The protrusion 681 is originally inserted into one of the empty slots 69, but due to the movement of the closing plate 63, the protrusion 681 is pulled out and then translated a distance towards the first displacement wheel 1 before being inserted into another empty slot 69. The locking plate 68 is positioned in the empty slot 69, which is to lock the relative position of the closing plate 63 and the receiving plate 64, which is to lock the relative position between the first closing plate 61 and the second closing plate 62.

[0038] Example 2: After the connecting block 8 and the driving block 7 are L-shaped or U-shaped, there is a notch. The first displacement wheel 1, the second displacement wheel 2, the first stationary wheel 3, the second stationary wheel 4 and the third stationary wheel 5 can be installed on the back plate 12 and fixed in position. Then the chain is put on the outside of the space enclosed by the above 5 wheels. At this time, the chain is inserted into the position of the notch and put on the first displacement wheel 1, and meshes with the first displacement wheel 1, ensuring the efficiency of disassembling and assembling the chain during installation and maintenance.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tensioning mechanism with multiple adjustable gears, characterized in that: include The first displacement wheel (1) and the second displacement wheel (2) are provided. The first displacement wheel (1) is displaced in the X1 or X2 direction. The center of the first displacement wheel (1) and the second displacement wheel (2) are both equipped with a central shaft and are connected to a short-range adjustment member (6) through the central shaft. The short-range adjustment member (6) is at a certain angle β with the straight line connecting the X1 and X2 directions, where 0° < β < 180°. The short-range adjustment member (6) makes the second displacement wheel (2) move away from or closer to the first displacement wheel (1). The first stationary wheel (3), the first shortest line connecting the first stationary wheel (3) and the first displacement wheel (1), the second shortest line connecting the first stationary wheel (3) and the second displacement wheel (2), and the third shortest line connecting the first displacement wheel (1) and the second displacement wheel (2) are not on the same straight line; A drive block (7) is connected to the first displacement wheel (1) via a central shaft. A connecting block (8) is connected to the side of the drive block (7) away from and / or close to the first displacement wheel (1). The drive block (7) and the connecting block (8) form an L-shape or a U-shape and have a notch. The first displacement wheel (1) is located at this notch.

2. The multi-round adjustable tensioning mechanism according to claim 1, characterized in that, The short-range adjustment component (6) includes a first plate (61), a second plate (62), a closing plate (63), and a receiving plate (64). The first plate (61) is connected to the closing plate (63) on the side near the second plate (62), and the second plate (62) is connected to the receiving plate (64) on the side near the first plate (61). The shapes of the first plate (61) connecting to the closing plate (63) and the second plate (62) connecting to the receiving plate (64) are both L-shaped.

3. The multi-round adjustable tensioning mechanism according to claim 2, characterized in that, The surface of the second composite plate (62) is provided with a slot (69), and the side of the closing plate (63) near the second composite plate (62) is connected to an insert plate (68), which is inserted into the slot (69).

4. The multi-round adjustable tensioning mechanism according to claim 3, characterized in that, At least one protrusion (681) is installed on the insert plate (68), and several grooves (691) are opened on the inner wall of the slot (69), with at least one protrusion (681) inserted into one of the grooves (691).

5. The multi-round adjustable tensioning mechanism according to claim 2, characterized in that: The receiving plate (64) has a rotating groove (66) on the side surface near the closing plate (63), and a gear (67) is provided in the rotating groove (66). The closing plate (63) has a plurality of meshing grooves (65) on the side surface near the receiving plate (64), and the gear (67) meshes with the plurality of meshing grooves (65).

6. The multi-round adjustable tensioning mechanism according to claim 1, characterized in that: A push rod (9) is connected to the side of the connecting block (8) away from the first displacement wheel (1). A sleeve (10) is provided on the outer sleeve of the push rod (9). A spring is provided inside the sleeve (10) and the spring is sleeved on the push rod (9). A connecting piece is connected to the end of the push rod (9) away from the connecting block (8), and the spring abuts against the connecting piece.

7. The multi-round adjustable tensioning mechanism according to claim 6, characterized in that: A back plate (12) is provided on one side of the first displacement wheel (1), and a sliding groove (13) is provided through the back plate (12). The first displacement wheel (1) is connected to a sliding block through a central shaft, and the sliding block slides in the sliding groove (13) in the X1 or X2 direction.

8. The multi-round adjustable tensioning mechanism according to claim 7, characterized in that: The sleeve (10) is connected to a connecting rod (11) at the end away from the connecting block (8). The connecting rod (11) is inserted into the connector of the back plate (12) and fixed to the back plate (12).

9. The multi-round adjustable tensioning mechanism according to claim 7, characterized in that: It also includes a second stationary wheel (4) and a third stationary wheel (5), and the second stationary wheel (4), the third stationary wheel (5) and the first stationary wheel (3) are connected to a limit plate (15) via a central shaft on the side away from the back plate (12).

10. The multi-round adjustable tensioning mechanism according to claim 7, characterized in that: A mounting plate (14) is provided on the side of the back plate (12) away from the first displacement wheel (1), and the mounting plate (14) is at least indirectly connected to the sliding block.

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